Climate averages 1991–2020
Surat Thani weather
in December.
A hot, wet month: the coolest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a hot month in Surat Thani: daytime highs average 28.4°C and nights cool to about 23.1°C. By daytime temperature it is the coolest month of the year.
Expect about 149 mm of rain on roughly 16 days, which makes December a wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 11 h 36 min on an average December day.
The nearest other city in this atlas is Nakhon Si Thammarat (105 km away). In December its highs average 27.6°C, 0.8°C cooler than Surat Thani, with 250 mm of rain.
Among the 46 cities listed in Thailand, Surat Thani ranks 35th of 46 for the warmest December highs and 42nd of 46 for the driest December (rainfall, lowest first). The mean December high of those 46 cities is 29.6°C; Surat Thani is 1.2°C cooler than that mean.
From December to January, average highs rise by 1.2°C to 29.6°C, and monthly rainfall falls from 149 mm to 68 mm.
The annual picture
December in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Surat Thani climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 29.6°C22.6°C | 22.6°C | 68 | 9.5 | 11.712 h |
| February | 31.8°C22.9°C | 22.9°C | 32 | 4.8 | 11.812 h |
| March | 33.3°C24.0°C | 24.0°C | 92 | 9.1 | 12.112 h |
| April | 33.4°C24.9°C | 24.9°C | 114 | 14.4 | 12.312 h |
| May | 32.1°C24.9°C | 24.9°C | 124 | 22.1 | 12.513 h |
| June | 31.3°C24.6°C | 24.6°C | 95 | 18.6 | 12.613 h |
| July | 31.1°C24.4°C | 24.4°C | 89 | 18.4 | 12.613 h |
| August | 30.9°C24.3°C | 24.3°C | 108 | 19.7 | 12.412 h |
| September | 30.2°C23.9°C | 23.9°C | 154 | 23.6 | 12.212 h |
| October | 29.2°C23.6°C | 23.6°C | 268 | 27.3 | 11.912 h |
| November | 28.6°C23.5°C | 23.5°C | 267 | 23.5 | 11.712 h |
| December, selected | 28.4°C23.1°C | 23.1°C | 149 | 15.7 | 11.612 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
December in nearby cities
- Nakhon Si Thammarat in DecemberThailand · 105 kmHigh 27.6°C · Low 23.0°C · 250 mm rain
- Phuket in DecemberThailand · 173 kmHigh 28.1°C · Low 25.4°C · 81 mm rain
- Ban Mai in DecemberThailand · 253 kmHigh 27.3°C · Low 24.8°C · 338 mm rain
- Hat Yai in DecemberThailand · 268 kmHigh 27.9°C · Low 23.5°C · 277 mm rain
- Alor Setar in DecemberMalaysia · 354 kmHigh 29.3°C · Low 23.4°C · 129 mm rain
- Yala in DecemberThailand · 360 kmHigh 28.0°C · Low 22.3°C · 236 mm rain
- Pendang in DecemberMalaysia · 372 kmHigh 29.2°C · Low 23.0°C · 160 mm rain
- Myeik in DecemberMyanmar · 376 kmHigh 31.1°C · Low 22.1°C · 25 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Surat Thani) is explained once on the Surat Thani year overview and on the Sources, method and limits page.